NPH (non speed-related)

As per Dr. Khan, Normal Pressure Hydrocephalus occurs when excess fluid accumulates in the venrtricles of the brain. It is called "normal pressure" because though excess, the cerebrospinal fluid pressure is often normal. But if the fluid causes the brain ventricles to enlarge, the nearby brain tissue can be damaged. NPH can cause certain symptoms, including difficulty walking and decline in thinking skills and later on, loss of bladder control. It affects primarily people in their 60's and 70's. The symptoms may overlap with other age-related conditions. So of course it's difficult to diagnose. A spinal tap may help identify those mostly likely to benefit from a shunt. In most cases, I read, people do not benefit following the removal of the fluid, but the symptom most likely to improve after the insertion of a shunt is difficulty in walking. I think, when dealing with the elderly, there is not much credibility attached to a lot of the treatments due to lack of sufficient time or interest in follow-up research or investigation. Creatures like guinea pigs, who have a much shorter lifespan, are much better indicators of whether a procedure or treatment will be effective. If you are a guinea pig and have health insurance, there is hope for you.